Hans-Martin Tillack works as an investigative reporter for the newspapers "Welt", "Welt am Sonntag" and the TV magazine "Report München" (public broadcaster ARD). Until 2021 he was an investigative reporter for the weekly magazine "Stern". From 1999 to 2004 he was the EU correspondent for "Stern" in Brussels, Belgium. He is also the author of three books, on the EU, on corruption and on lobbyists and their influence on German politics. He regularly takes part in investigative cross-border projects. From 2009 until 2013 Tillack was a jury member of Journalismfund.eu's cross-border investigative journalism working grant project. For his coverage of the EU he received the Leipzig Media Award.